Mms: update German translation

Patch Set 1:	* fix formatting
		* fix some typo's

Patch Set 2:	* add gesture sensitivity arrays

Patch Set 3:	* fix the build

Patch Set 4:	* add strings for "mark as read" feature
		* remove whitespaces

Patch set 5:    * changed wording

Change-Id: Id70813ceb849cafd145d53bc398c0a30b3a9bb50